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 // Copyright 2010 The Apache Software Foundation
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 // Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
package org.apache.tapestry5.validator;
Allows support for "validator macros", a simple-minded way of combining several related valiations together under a single name. The service's configuration maps string keys (macro names) to string values (validation constraints).

public interface ValidatorMacro
Given a potential validator macro (a simple string name), returns the value for that macro, a comma-separated list of validation constraints.

constraints, or null if no such validator macro
    String valueForMacro(String validatorMacro);
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